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5.3 Replacing Parts
5.3.1 Replacing Rectifier
For rectifier, it is recommended not to repair any other parts. When faulty, the rectifier should be replaced, not repaired.
See the following procedures to replace the rectifier.
1. Take a new rectifier and check it for any damage from transport.
2. Loosen the fixing screw of the rectifier handle. Pull out the faulty rectifier from the rack by grabbing its handle, as
shown in Figure 5-3.
Note
The surface temperature of the rectifier just exit working is still very high, pay attention to grasp the rectifier to avoid falling
damage.
3. Hold the rectifier handle and push the new rectifier into the slot just vacated and make sure the connection is good.
After a brief delay, the run indicator of the rectifier will turn on and the fan will start running.
4. Check whether the new rectifier works normally.
You should make sure that:
1) The monitoring unit recognizes the new rectifier.
2) The new rectifier shares current with other rectifiers.
3) When this new rectifier is pulled out, there is a corresponding alarm and the monitoring unit displays the alarm.
If the new rectifier passes all the above tests, the replacement is a success.
5. Push the handle back into the front panel to fix the rectifier, and tighten the fixing screw of the rectifier handle.
5.3.2 Replacing Controller
Controller fault: the run indicator (green) is off and the LCD screen does not display (external alarms may also be
triggered if a background system is connected).
Please check whether the system bus voltage is normal, and the controller connection terminal is reliable. If the above
two points are normal, then the controller is faulty, replace a new controller.
The replacing procedures are as follows:
1. Safety preparation
Attach one end of the effective grounding strap to the wrist and the other end to a suitable ground.
2. Loosen the locking screw on the controller to pull out the controller from the subrack power system until the
terminals J6, J7, J2 (when the temperature sensor is configured) are exposed. Unplug the connection terminal on J6,
J7 and J2, then pull out the controller from the subrack power system completely.
Fixing screw of handle
Figure 5-3 Replacing rectifier
NetSure 2100 A31-S1 Subrack Power System User Manual
Chapter 5 Maintenance
Handle
17
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